Definitions

1. adjective

relating to or denoting the sylvian fissure, or relating to a part of the brain that is on either side of the sylvian fissure.

“The neurosurgeon carefully examined the patient’s sylvian fissure during the surgery.”

2. noun

a fissure in the brain that separates the temporal lobe from the frontal and parietal lobes.

“The MRI scan revealed a significant sylvian fissure in the patient’s brain.”